PPT based on Human Computer Interface whch is easier to understand and carryout the presentation in conferences..if u need documentation please make a comment down...enjoy the ppt..have a good luck
2. Outline
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Introduction
What is HCI?
Types of interfaces
Existing technologies
Advances in HCI
Architecture
Applications
Advantages and Disadvantages
Conclusion
3. Introduction
Human
•The end-user
•The members of an organization
Computer
•Hardware
•Software
Interface
• A point where two objects meet.
• A point where the human can tell the computer what to do.
• A point where the computer displays the requested information.
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4. What is HCI?
• A process of information transfer
User to Machine
Machine to User
• HCI is also referred to as Man Machine Interaction.
• HCI is what the user sees and includes:
How the system looks like?
How the system accepts input from the user?
How the system responds to user input?
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5. Types of Interfaces
• Command Line Interface (CLI)
A CLI displays a prompt, the user types a command on the
keyboard, the computer executes the command and provides
textual output.
• Menu Driven Interface
The user has a list of items to choose from, and can make
selections by highlighting one.
Graphical User Interface (GUI)
Uses windows, icons, menus and pointers (WIMP) which
can be manipulated by a mouse (and often to an extent by a
keyboard as well).
Natural Language Interface
Can range from simple command systems to voice activated
text processing. Commands are spoken in “normal” language.
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6. Command Line Interface
Advantages
Very flexible with the use of “switches” (options)
Good for “expert” users - can quickly access commands
Uses the fewest system resources
Disadvantages
Requires the user to learn “complex” commands or language
“Hidden” features i.e. if the command is unknown we cannot
make use of that feature
Not very good for novice users
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7. Menu Driven Interface
Advantages
No need to learn complex commands/language
Easier for a novice to learn/use
Ideal when there are a limited number of options (efficient)
Disadvantages
Can be frustrating for experienced users i.e. the command they
want to use is buried 5 levels deep.
User interface may be limited by screen space and number of
options available.
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8. Graphical User Interface
Advantages
Most suitable interface for inexperienced or novice users
Many generic packages for a GUI will share common
features
Disadvantages
GUIs use more system resources than other types of interface
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9. Natural Language
Interface
Advantages
No training required
Can be quicker than keyboard entry
Hands-free
Can be used by the disabled
Disadvantages
Emerging technology – still contains “bugs”
Difficulty in dealing with homonyms
Difficult to recognise all the different ways of saying things
(and regional dialects)
Artificial languages are often more precise
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10. Existing Technologies
The existing interfaces differ in the degree of complexity
both because of degree of functionality or usability.
The user activity has three different levels:
Physical
Cognitive
Affective
The existing physical technologiesfor HCI basically can
be categorized by human senses.
These devices are basically relying on three human senses:
vision, audio, and touch.
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11. Advances in HCI
The new advances in HCI can be categorizedin 3sections:
wearable devices, wireless devices, and virtual devices
Examples:
GPS Navigation Systems
Military super-soldier enhancing devices
PDA
Canesta Keyboard(QWERTY pattern)
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13. Architecture
Architecture of any HCI systems is identified by:
Number of inputs and outputs in the system
Diversity of inputs and outputs in terms of modality
Workings of these diverse input and output for
interaction purpose
Basedon differentconfigurationand design ofinterface,HCI
systems can be divided into:
Unimodal HCI system
Multimodal HCI system
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14. Limitations
Not a natural way of human interaction
Usually designed for the „average‟user
Fails to cater to the needs of a diverse category of people
Difficult to use by disabled, illiterate and untrained people
Cannot provide universal interface
17. Conclusion
Quality of system depends on how it is represented and used
by user. Therefore, enormous amount of attention has been
paid to better designs of HCI. Virtual reality can be the
common interface in future. UbiComp is trying to embed the
technology in the environment and make it invisible at the
same time. Natural and Neural Interfaces are the future of
Human-Computer input interfaces.
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